Tesco horsemeat-contaminated beef burgers did not come from a list of approved suppliers admits supermarket
Tesco vows to introduce a DNA testing system on meat products to 'ensure the quality' of the food
Supermarket drops frozen burger supplier following a 'breach of trust'
Meat in Tesco burgers which was found to contain horse DNA did not come from a list of approved suppliers, the supermarket admitted today.
The meat also came from outside the UK or Ireland, which was contrary to the supermarket's policy.
The supermarket has

The furore deepened further last week when it emerged a potentially carcinogenic drug may have entered the food chain following the slaughter of horses in the UK.

Shadow environment secretary Mary Creagh told the Commons that some of these animals tested positive for the carcinogen phenylbutazone, commonly known as bute.

She said: 'I am in receipt of evidence showing that several horses slaughtered in UK abattoirs last year tested positive for, phenylbutazoneor bute, a drug which causes cancer in humans and is banned from the human food chain.